Javascript 如何在加号和减号之间切换手风琴?
我有6个家长手风琴链接,都有孩子。在左边,它们包含字体加号 我想在单击时将加号切换为减号 目前,我的plusSign变量只抓取第一个加号,以表明它可以工作(使用Javascript 如何在加号和减号之间切换手风琴?,javascript,for-loop,if-statement,accordion,Javascript,For Loop,If Statement,Accordion,我有6个家长手风琴链接,都有孩子。在左边,它们包含字体加号 我想在单击时将加号切换为减号 目前,我的plusSign变量只抓取第一个加号,以表明它可以工作(使用constplusSign=document.querySelector('.fa plus');) 对于第一个链接非常有用。但是,我希望这会影响所有实例 我尝试使用querySelectorAll(constplussign=document.querySelectorAll('.faplus');),但根本不起作用 代码位于上面的链接
constplusSign=document.querySelector('.fa plus');
)
对于第一个链接非常有用。但是,我希望这会影响所有实例
我尝试使用querySelectorAll(constplussign=document.querySelectorAll('.faplus');
),但根本不起作用
代码位于上面的链接中,但下面是代码,以防万一:
HTML:
-
JS:
constplussign=document.querySelector('.faplus');
设acc=document.getElementsByClassName(“accordion”);
让我;
对于(i=0;i
您需要使用传递给事件侦听器回调函数的事件
对象
event.target
将为您提供单击的a
标记,event.target.firstElementChild
将为您提供单击的a
标记旁边的图标
let acc=document.getElementsByClassName(“accordion”);
让我;
对于(i=0;i
.panel{
显示:无;
}
产品页
-
AOS.init();
检查此项。稍微编辑一下你的代码
constplussign=document.querySelector('.faplus');
设acc=document.getElementsByClassName(“accordion”);
让我;
让TogleAccordion=函数(){
/*在隐藏和显示活动面板之间切换*/
让panel=this.nextElementSibling;
if(panel.classList.contains(“折叠”)){
警报(“开放式acc”);
panel.classList.remove(“折叠”)
plusSign.classList.remove('fa-plus');
plusSign.classList.add('fa-减号');
}否则{
警报(“关闭acc”);
panel.classList.add(“折叠”)
plusSign.classList.remove('fa-减号');
plusSign.classList.add('fa-plus');
}
}
对于(i=0;i
.panel{
显示:块;
}
.面板倒塌{
显示:无;
}
-
管制及;自动化
<!--Quick Link Box-->
<section class="quick-link-box">
<div class="columns is-desktop">
<div class="column">
<div class="card quick-link-card quick-link-card-mobile" tabindex="0">
<ul>
<li>
<a class="parent accordion" tabindex="0"><i class="fa fa-plus" aria-hidden="true"></i> Control & Automation</a>
<div class="panel">
<ul class="child">
<li><a href="#">Molded Machine Tool Industrial Control Transformer</a></li>
<li><a href="#">Industrial Open Core & Coil Control Transformer</a></li>
<li><a href="#">General Purpose Enclosed Transformer</a></li>
<li><a href="#">Encapsulated Control Transformer</a></li>
<li><a href="#">Energy Efficient Drive Isolation Transformer (Gen. 3)</a></li>
<li><a href="#">Energy Efficient Drive Isolation Transformer (Gen. 2)</a></li>
<li><a href="#">Drive Isolation Transformer (Gen. 1)</a></li>
<li><a href="#">Reactors</a></li>
<li><a href="#">DV/DT Filter</a></li>
<li><a href="#">Motor Starting Autotransformers</a></li>
</ul>
</div>
</li>
<li>
<a class="parent accordion" tabindex="0"><i class="fa fa-plus" aria-hidden="true"></i> Medium Voltage Distribution</a>
<div class="panel">
<ul class="child">
<li><a href="#">Link #1</a></li>
<li><a href="#">Link #2</a></li>
<li><a href="#">Link #3</a></li>
</ul>
</div>
</li>
<li>
<a class="parent accordion" tabindex="0"><i class="fa fa-plus" aria-hidden="true"></i> Low Voltage Distribution</a>
<div class="panel">
<ul class="child">
<li><a href="#">Link #1</a></li>
<li><a href="#">Link #2</a></li>
<li><a href="#">Link #3</a></li>
</ul>
</div>
</li>
<li>
<a class="parent accordion" tabindex="0"><i class="fa fa-plus" aria-hidden="true"></i> Encapsulated & Specialty</a>
<div class="panel">
<ul class="child">
<li><a href="#">Link #1</a></li>
<li><a href="#">Link #2</a></li>
<li><a href="#">Link #3</a></li>
</ul>
</div>
</li>
<li>
<a class="parent accordion" tabindex="0"><i class="fa fa-plus" aria-hidden="true"></i> Custom Products</a>
<div class="panel">
<ul class="child">
<li><a href="#">Link #1</a></li>
<li><a href="#">Link #2</a></li>
<li><a href="#">Link #3</a></li>
</ul>
</div>
</li>
<li>
<a class="parent accordion" tabindex="0"><i class="fa fa-plus" aria-hidden="true"></i> OEM Products</a>
<div class="panel">
<ul class="child">
<li><a href="#">Link #1</a></li>
<li><a href="#">Link #2</a></li>
<li><a href="#">Link #3</a></li>
</ul>
</div>
</li>
</ul>
</div>
</div>
</div>
</section>
const plusSign = document.querySelector('.fa-plus');
let acc = document.getElementsByClassName("accordion");
let i;
for (i = 0; i < acc.length; i++) {
acc[i].addEventListener("click", function() {
/* Toggle between hiding and showing the active panel */
let panel = this.nextElementSibling;
if (panel.style.display === "block") {
panel.style.display = "none";
plusSign.classList.remove('fa-minus');
plusSign.classList.add('fa-plus');
} else {
panel.style.display = "block";
plusSign.classList.remove('fa-plus');
plusSign.classList.add('fa-minus');
}
});
}